Garmin GT12M Bronze Thru-Hull - 350W - 12 DegreeMeet the Garmin GT12M Bronze Thru Hull 350W 12 Degree, a purpose built flush mounted transducer designed to reduce drag while delivering peak sonar performance on midsize fishing and cruising boats. This bronze thru hull unit provides crisp, reliable returns for fish arches, structure, and bottom depth right on your display. Midband CHIRP Traditional Sonar with an 8 pin, 350 watt bronze housing offers high definition imaging that clearly defines